Improvement in sash-holders



QNITED STATES GEORGE B. SMITH, OF DUNMORE, PENNSYLVANIA.

IMPROVEMENT IN SASH-HOLDERS.

Specification forming part of Letters Patent No. 148,857, dated March24, 1874; application filed February 16, 1874.

To all whom it may concern:

Be it known that I, GEORGE B. SMITH, of

' Dunmore, in the county of Luzerne and State and I do hereby declarethe following to be a full, clear, and exact description of the same,reference being had to the accompanying drawings making a part of thisspecification, in which- Figure 1 represents, in perspective, theexterior of the sash-fastener with its lockingwheel slightly projectingfrom the case. Fig. 2 represents in plan the interior of the case, thecap-plate or cover being removed. Fig. 3 represents a section takentransversely through the sash-fastener.

My invention relates to a sash fastener wherein there is a fixed pinion,the center of which is the center of motion of a crank that is turned bya knob or handle on the exterior of the case, said crank, at its outeror free end, carrying a co gged wheel,which rolls around the perimeterof the fastened pinion, and which, by projecting slightly at one part orthe other of the inclosing-case, looks a sash up or down, as the casemay be.

To enable others skilled in the art to make and use my invention, I willproceed to describe the same with reference to the drawin gs.

The inclosing-case A may be cast in the usual box form, with lugs B, bywhich it may be fastened to the window or sash, and with a back-plate orcover, 0. One edge or side of the case, as at a, is left open, as seenat Figs. 1 and 2, for a purpose that will be hereafter explained. In thebottom of the box portion of the case A, and fast thereto, there is aspurwheel, 0. To the cover 0 of the case there is attached a knob orhandle, D, the shank e of which passes through said cover and through acrank-arm, f, inside of the case, and has a step or bearing in thecenter of the fixed spurwheel a, as at 2'. Upon the extreme outer end ofthe crank arm f, and upon a pivot-pin or journal thereon, is arranged acogged wheel,

g, which, when the knob or handle D and the crank-arm fare moved, rollsaround but in mesh with the. fixed spurgear 0, and the space in the boxis such that the wheel 9 can roll clear around the fixed pinion or spur,so as to project at the upper or at the lower portion of the opening a.

To look and hold a sash up, the sash is raised to any desired height,and then the wheel 9 is revolved by the knob D and its crank-arm f untilit projects from the slot or opening a, as seen in Figs. 1 and 2, anduntil it comes against the sash. Any tendency of the sash to come downwould also tend to roll the wheel 9 farther out of the opening a, whichit could not do for the sash, against which it already bears, and whichit would only hold the tighter.

To lock the sash down, it is. first brought to its seat, and then thewheel 9, by means of the knob and its crank-arm, is rolled clear aroundthe fast pinion 0 until said wheel projects from the lower end of theslot or opening a, and is brought against the sash. Any tendency toraise the sash in this position of the wheel 9 only crowds it harderagainst the sash, and it can go no farther, and consequently locks thesash.

The point of contact or pressure on the wheel gwill always be radial tothe center of the fixed spur-wheel c, and that spur being stationarysteadies and guides the holding-wheel g, which revolves or rolls aroundit circumferentially.

Having thus described my invention, what I claim is In combination withthe case A, a stationary spur-wheel, c, and a knob or handle, D, andcrank-arm, f, carrying a holding gear-wheel, g, which rolls around andin mesh with the fixed spur or pinion c, to project said wheel g againstthe sash to be looked, as described and represented.

GEORGE B. SMITH;

Witnesses:

ANTHONY HORAN, S. B. BULKLEY.

